Invention Grant
- Patent Title: Method and apparatus for descrambling content
- Patent Title (中): 用于解扰内容的方法和装置
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Application No.: US11939500Application Date: 2007-11-13
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Publication No.: US07925016B2Publication Date: 2011-04-12
- Inventor: Brant L. Candelore
- Applicant: Brant L. Candelore
- Applicant Address: JP Tokyo US NJ Park Ridge
- Assignee: Sony Corporation,Sony Electronics Inc.
- Current Assignee: Sony Corporation,Sony Electronics Inc.
- Current Assignee Address: JP Tokyo US NJ Park Ridge
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: H04N7/167
- IPC: H04N7/167 ; H04L9/32

Abstract:
In accordance with one embodiment, a method for securing control words is provided. The method includes receiving scrambled digital content in a descrambler integrated circuit. The method further includes receiving an encrypted control word in the descrambler integrated circuit, decrypting the encrypted control word using a key stored in a register circuit of the descrambler integrated circuit, and descrambling the scrambled digital content in the descrambler integrated circuit using the decrypted control word.
Public/Granted literature
- US20100020963A1 Method and Apparatus for Descrambling Content Public/Granted day:2010-01-28
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